TCL1585 Ver la hoja de datos (PDF) - TelCom Semiconductor Inc => Microchip

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TCL1585

7A / 5A / 4.6A / 3A, FAST RESPONSE, LOW DROPOUT POSITIVE LINEAR VOLTAGE REGULATORS

TelCom Semiconductor Inc => Microchip 

PRELIMINARY INFORMATION

TCL1584

TCL1585

TCL1587

TYPICAL APPLICATIONS (Cont.)

7A / 5A / 4.6A / 3A, FAST RESPONSE,

LOW DROPOUT POSITIVE LINEAR

VOLTAGE REGULATORS

Typical Intel™* Pentium™* Pro GTL+ Bus Terminator Application Using TCL1587-1.5

VIN = 5V or 3.3V

C1 = 10µF

VIN = 5V or 3.3V

C1 = 10µF

VIN

VOUT

TCL1587-1.5

GND

VOUT = 1.5V @ 3A

C2 = 10µF

(Tantalum)

RTERM

C3 =1µF x 5 = 100Ω x 71

(Ceramic) Lines

RREF

VIN

VOUT

TCL1587-1.5

GND

GTL+ Bus (ZO)

VREF = 1.0V

VOUT = 1.5V @ 3A

RTERM

= 100Ω x 71

Lines

C2 = 10µF

(Tantalum)

C3 = 1µF x 5

(Ceramic)

2RREF

NOTES: 1. It is recommended that the GTL+ bus be terminated at each end by a separate regulator to avoid power distribution losses.

2. The GTL+ bus transmission line symbol will consist of all the components (chip set IC's) on the GTL+ bus.

3. RREF and 2RREF should be chosen such that VREF loading does not appreciably degrade VREF regulation.

Values <100 ohms should suffice for most applications.

4. RTERM will be determined by individual bus physical/electrical parameters. See CPU manufacturer documentation for

application information.

*All Trademarks and Trade Names are the property of their respective owners.

TCL1584/1585/1587-04 6/6/97

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